zmk/app/boards/shields/romac/romac.overlay

/*
 * Copyright (c) 2020 Pete Johanson, Richard Jones
 *
 * SPDX-License-Identifier: MIT
 */

#include <dt-bindings/zmk/matrix_transform.h>

/ {
    chosen {
        zmk,kscan = &kscan0;
    };

    kscan0: kscan {
        compatible = "zmk,kscan-gpio-matrix";
        wakeup-source;

        diode-direction = "col2row";
        row-gpios
            = <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            ;

        col-gpios
            = <&pro_micro 18 GPIO_ACTIVE_HIGH>
            , <&pro_micro 15 GPIO_ACTIVE_HIGH>
            , <&pro_micro 14 GPIO_ACTIVE_HIGH>
            ;

    };
};